Do you know that men need an average of 3.7 liters of water (that's about 15 cups) a day while women need at least 2.7 liters (about 11 cups)?
Of these, do you even meet up with 50%?
Do you know that water intake
1. Prevent kidney damage
2. Help maintain blood pressure
3. Helps the digestive system and reduce dehydration
4. Boost skin and health and beauty
5. Cushion the brain and help with proper thinking.
Do you also know that failure to take enough water can lead to
1. Persistent headache
2. Lead to doled skinned
3. Unnecessary fatigue
4. Increase risk of stroke. Etc
When next you think about eating a great meal that is of a balanced diet, remember water is one major thing you shouldn't joke with for any reason.
I don't believe that I'm drinking more than 4-5 glasses per day; I was drinking more when it was extremely hot and I was constantly busy with chores. I haven't noticed any significant benefits of consuming greater amounts of water, apart from clearer skin.
Here's a video from the series "Adam Ruins Everything" that explains everything in detail.
https://www.youtube.com/watch?v=OWASUMMQjj8